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GitHub - cfenollosa/os-tutorial: How to create an OS from scratch

Inspired by this document and the OSDev wiki, I'll try to make short step-by-step READMEs and code samples for anybody to follow. Honestly, this tutorial is basically the first document but split into smaller pieces and without the theory.

os  programming  tutorial  kernel 
2 days ago by jefframnani
systemtap notes
systemtap是redhat开发的一个分析工具,功能非常强大,这里记录一点自己在使用上碰到的一些问题
systemtap  kernel 
4 days ago by jinwik
CentOS 7 升级内核 - 简书
虽然有些人使用 Linux 来表示整个操作系统,但要注意的是,严格地来说,Linux 只是个内核。另一方面,发行版是一个完整功能的系统,它建立在内核之上,具有各种各样的应用程序工具和库。 虽然有些人使用 Linux 来表示整个操作系统,但要注意的是,严格地来说,Linux 只是个内核。另一方面,发行版是一个完整功能的系统,它建立在内核之上,具有各种各样的应用程序工具和库。 在正常操作期间,内...
kernel  centos 
4 days ago by jinwik
uprobe试用小结 - CSDN博客
项目上需要分析用户态程序的性能,开发人员一般的方式是在程序内部实现打点函数,记录当程序运行到该点的时间戳,通过比较两点之间的时间间隔来估计两点之间的时间消耗。这样一方面增加了开发的工作量,另外这些打点也会给业务带来额外性能消耗,是否有另外的方式来解决该问题呢?
前段时间在研究ftrace,发现其还有个uprobe特性,故名思意就是用户态的探针工具,今天尝试了下uprobe的使用,小结如下:
systemtap  kernel  probe 
4 days ago by jinwik
Linux 4.19-rc4 released, an apology, and a maintainership note - Linus Torvalds
Hell freezes over. Linus admits he’s an asshole.

This is my reality. I am not an emotionally empathetic kind of person
and that probably doesn't come as a big surprise to anybody. Least of
all me. The fact that I then misread people and don't realize (for
years) how badly I've judged a situation and contributed to an
unprofessional environment is not good.

This week people in our community confronted me about my lifetime of
not understanding emotions. My flippant attacks in emails have been
both unprofessional and uncalled for. Especially at times when I made
it personal. In my quest for a better patch, this made sense to me.
I know now this was not OK and I am truly sorry.
linux  opensource  culture  kernel  LinusTorvalds 
5 days ago by jefframnani
Vagrant启动自己编译的内核 - 简书
上一篇为Guest Ubuntu编译内核我们为Vagrant的Guest Ubuntu编译了内核,现在我们要在Vagrant的Guest OS中安装,并启动自己的内核。 我们现在只需要安装linux-image和linux-headers, 装好以后,就可以重新启动新的内核了,到Host Ubuntu的Shell中: 重启之后,再进入Guest Ubuntu验证内核版本: 可以看到已经是新的...
kernel 
7 days ago by jinwik
Remote Code Execution in Alpine Linux
tl;dr I found several bugs in apk, the default package manager for Alpine Linux. Alpine is a really lightweight distro that is very commonly used with Docker...
alpine  kernel  security 
8 days ago by geetarista

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